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419
engines/hpl1/engine/gui/WidgetSlider.cpp
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419
engines/hpl1/engine/gui/WidgetSlider.cpp
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/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/*
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* Copyright (C) 2006-2010 - Frictional Games
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*
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* This file is part of HPL1 Engine.
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*/
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#include "hpl1/engine/gui/WidgetSlider.h"
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#include "hpl1/engine/system/low_level_system.h"
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#include "hpl1/engine/math/Math.h"
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#include "hpl1/engine/system/String.h"
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#include "hpl1/engine/gui/Gui.h"
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#include "hpl1/engine/gui/GuiGfxElement.h"
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#include "hpl1/engine/gui/GuiSet.h"
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#include "hpl1/engine/gui/GuiSkin.h"
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#include "hpl1/engine/gui/WidgetButton.h"
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#include "hpl1/engine/graphics/font_data.h"
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namespace hpl {
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//////////////////////////////////////////////////////////////////////////
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// CONSTRUCTORS
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//////////////////////////////////////////////////////////////////////////
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//-----------------------------------------------------------------------
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cWidgetSlider::cWidgetSlider(cGuiSet *apSet, cGuiSkin *apSkin,
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eWidgetSliderOrientation aOrientation)
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: iWidget(eWidgetType_Slider, apSet, apSkin) {
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mOrientation = aOrientation;
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mbPressed = false;
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mlValue = 0;
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mlMaxValue = 10;
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mlButtonValueAdd = 1;
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mlBarValueSize = 1;
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for (int i = 0; i < 2; ++i)
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mvButtons[i] = NULL;
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mfButtonSize = mpSkin->GetAttribute(eGuiSkinAttribute_SliderButtonSize).x;
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LoadGraphics();
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}
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//-----------------------------------------------------------------------
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cWidgetSlider::~cWidgetSlider() {
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if (mpSet->IsDestroyingSet() == false) {
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for (int i = 0; i < 2; ++i)
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mpSet->DestroyWidget(mvButtons[i]);
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}
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}
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//-----------------------------------------------------------------------
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//////////////////////////////////////////////////////////////////////////
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// PUBLIC METHODS
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//////////////////////////////////////////////////////////////////////////
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//-----------------------------------------------------------------------
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void cWidgetSlider::SetValue(int alValue) {
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if (mlValue == alValue)
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return;
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mlValue = alValue;
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if (mlValue < 0)
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mlValue = 0;
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if (mlValue > mlMaxValue)
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mlValue = mlMaxValue;
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cGuiMessageData data = cGuiMessageData(mlValue);
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ProcessMessage(eGuiMessage_SliderMove, data);
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UpdateBarProperties();
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}
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void cWidgetSlider::SetMaxValue(int alMax) {
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if (mlMaxValue == alMax)
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return;
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mlMaxValue = alMax;
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if (mlMaxValue < 0)
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mlMaxValue = 0;
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if (mlBarValueSize > mlMaxValue)
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mlBarValueSize = mlMaxValue;
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UpdateBarProperties();
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}
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void cWidgetSlider::SetButtonValueAdd(int alAdd) {
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mlButtonValueAdd = alAdd;
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}
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void cWidgetSlider::SetBarValueSize(int alSize) {
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if (mlBarValueSize == alSize)
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return;
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mlBarValueSize = alSize;
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if (mlBarValueSize > mlMaxValue + 1)
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mlBarValueSize = mlMaxValue + 1;
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UpdateBarProperties();
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}
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//-----------------------------------------------------------------------
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//////////////////////////////////////////////////////////////////////////
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// PROTECTED METHODS
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//////////////////////////////////////////////////////////////////////////
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//-----------------------------------------------------------------------
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void cWidgetSlider::UpdateBarProperties() {
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//////////////////////////
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// Vertical
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if (mOrientation == eWidgetSliderOrientation_Vertical) {
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mfSliderSize = mvSize.y - mfButtonSize * 2;
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mvBarSize = cVector2f(mvSize.x,
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((float)mlBarValueSize / (float)(mlMaxValue + 1)) * (mfSliderSize));
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float fMinSize = mvGfxCorners[0]->GetActiveSize().y + mvGfxCorners[3]->GetActiveSize().y + 2;
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if (mvBarSize.y < fMinSize)
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mvBarSize.y = fMinSize;
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// The set taken for each value
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if (mlMaxValue > 0)
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mfValueStep = (1 / (float)(mlMaxValue)) * (mfSliderSize - mvBarSize.y);
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else
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mfValueStep = 0;
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mvBarPos = cVector3f(0, mfButtonSize + mfValueStep * (float)mlValue, 0.2f);
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}
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//////////////////////////
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// Horizontal
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else {
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mfSliderSize = mvSize.x - mfButtonSize * 2;
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mvBarSize = cVector2f(((float)mlBarValueSize / (float)(mlMaxValue + 1)) * (mfSliderSize),
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mvSize.y);
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float fMinSize = mvGfxCorners[0]->GetActiveSize().x + mvGfxCorners[3]->GetActiveSize().x + 2;
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if (mvBarSize.x < fMinSize)
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mvBarSize.x = fMinSize;
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// The set taken for each value
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if (mlMaxValue > 0)
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mfValueStep = (1 / (float)(mlMaxValue)) * (mfSliderSize - mvBarSize.x);
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else
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mfValueStep = 0;
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mvBarPos = cVector3f(mfButtonSize + mfValueStep * (float)mlValue, 0, 0.2f);
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}
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mBarRect.x = GetGlobalPosition().x + mvBarPos.x;
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mBarRect.y = GetGlobalPosition().y + mvBarPos.y;
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mBarRect.w = mvBarSize.x;
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mBarRect.h = mvBarSize.y;
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mfMaxPos = mfButtonSize + mfValueStep * (float)(mlMaxValue);
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mfMinPos = mfButtonSize;
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}
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//-----------------------------------------------------------------------
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bool cWidgetSlider::ArrowButtonDown(iWidget *apWidget, cGuiMessageData &aData) {
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int i;
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for (i = 0; i < 2; ++i)
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if (mvButtons[i] == apWidget)
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break;
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if (i == 0)
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SetValue(mlValue - 1);
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if (i == 1)
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SetValue(mlValue + 1);
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// Call callbacks.
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cGuiMessageData data = cGuiMessageData(mlValue);
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ProcessMessage(eGuiMessage_SliderMove, data);
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return true;
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}
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kGuiCalllbackDeclaredFuncEnd(cWidgetSlider, ArrowButtonDown)
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//-----------------------------------------------------------------------
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void cWidgetSlider::OnInit() {
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mvButtons[0] = mpSet->CreateWidgetButton(0, 0, Common::U32String(""), this);
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mvButtons[1] = mpSet->CreateWidgetButton(0, 0, Common::U32String(""), this);
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for (int i = 0; i < 2; i++) {
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mvButtons[i]->SetImage(mvGfxArrow[i], false);
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mvButtons[i]->AddCallback(eGuiMessage_MouseDown, this, kGuiCallback(ArrowButtonDown));
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}
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OnChangeSize();
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}
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//-----------------------------------------------------------------------
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void cWidgetSlider::OnLoadGraphics() {
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/////////////////////////
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// Background, corners and borders
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mpGfxButtonBackground = mpSkin->GetGfx(eGuiSkinGfx_ButtonUpBackground);
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mvGfxBorders[0] = mpSkin->GetGfx(eGuiSkinGfx_ButtonUpBorderRight);
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mvGfxBorders[1] = mpSkin->GetGfx(eGuiSkinGfx_ButtonUpBorderLeft);
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mvGfxBorders[2] = mpSkin->GetGfx(eGuiSkinGfx_ButtonUpBorderUp);
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mvGfxBorders[3] = mpSkin->GetGfx(eGuiSkinGfx_ButtonUpBorderDown);
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mvGfxCorners[0] = mpSkin->GetGfx(eGuiSkinGfx_ButtonUpCornerLU);
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mvGfxCorners[1] = mpSkin->GetGfx(eGuiSkinGfx_ButtonUpCornerRU);
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mvGfxCorners[2] = mpSkin->GetGfx(eGuiSkinGfx_ButtonUpCornerRD);
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mvGfxCorners[3] = mpSkin->GetGfx(eGuiSkinGfx_ButtonUpCornerLD);
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//////////////////////////
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// Vertical
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if (mOrientation == eWidgetSliderOrientation_Vertical) {
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mvGfxArrow[0] = mpSkin->GetGfx(eGuiSkinGfx_SliderVertArrowUp);
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mvGfxArrow[1] = mpSkin->GetGfx(eGuiSkinGfx_SliderVertArrowDown);
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mpGfxBackground = mpSkin->GetGfx(eGuiSkinGfx_SliderVertBackground);
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}
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//////////////////////////
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// Horizontal
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else {
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mvGfxArrow[0] = mpSkin->GetGfx(eGuiSkinGfx_SliderHoriArrowUp);
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mvGfxArrow[1] = mpSkin->GetGfx(eGuiSkinGfx_SliderHoriArrowDown);
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mpGfxBackground = mpSkin->GetGfx(eGuiSkinGfx_SliderHoriBackground);
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}
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mfButtonSize = mpSkin->GetAttribute(eGuiSkinAttribute_SliderButtonSize).x;
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}
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//-----------------------------------------------------------------------
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void cWidgetSlider::OnChangeSize() {
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if (mvButtons[0] == NULL || mvButtons[1] == NULL)
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return;
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//////////////////////////
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// Vertical
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if (mOrientation == eWidgetSliderOrientation_Vertical) {
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mvButtons[0]->SetPosition(cVector3f(0, 0, 0.2f));
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mvButtons[0]->SetSize(cVector2f(mvSize.x, mfButtonSize));
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mvButtons[1]->SetPosition(cVector3f(0, mvSize.y - mfButtonSize, 0.2f));
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mvButtons[1]->SetSize(cVector2f(mvSize.x, mfButtonSize));
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}
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//////////////////////////
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// Horizontal
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else {
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mvButtons[0]->SetPosition(cVector3f(0, 0, 0.2f));
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mvButtons[0]->SetSize(cVector2f(mfButtonSize, mvSize.y));
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mvButtons[1]->SetPosition(cVector3f(mvSize.x - mfButtonSize, 0, 0.2f));
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mvButtons[1]->SetSize(cVector2f(mfButtonSize, mvSize.y));
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}
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UpdateBarProperties();
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}
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//-----------------------------------------------------------------------
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void cWidgetSlider::OnChangePosition() {
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UpdateBarProperties();
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}
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//-----------------------------------------------------------------------
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void cWidgetSlider::OnDraw(float afTimeStep, cGuiClipRegion *apClipRegion) {
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////////////////////////////////
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// Background
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// Vertical
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if (mOrientation == eWidgetSliderOrientation_Vertical) {
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mpSet->DrawGfx(mpGfxBackground, GetGlobalPosition() + cVector3f(0, mfButtonSize, 0.1f),
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cVector2f(mvSize.x, mvSize.y - mfButtonSize * 2));
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}
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// Horizontal
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else {
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mpSet->DrawGfx(mpGfxBackground, GetGlobalPosition() + cVector3f(mfButtonSize, 0, 0.1f),
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cVector2f(mvSize.x - mfButtonSize * 2, mvSize.y));
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}
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////////////////////////////////
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// Borders and button background
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DrawBordersAndCorners(mpGfxButtonBackground, mvGfxBorders, mvGfxCorners,
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GetGlobalPosition() + mvBarPos, mvBarSize);
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}
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//-----------------------------------------------------------------------
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bool cWidgetSlider::OnMouseMove(cGuiMessageData &aData) {
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if (mbPressed) {
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int lVal;
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// Vertical
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if (mOrientation == eWidgetSliderOrientation_Vertical) {
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mvBarPos.y = WorldToLocalPosition(aData.mvPos).y + mvRelMousePos.y;
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if (mvBarPos.y > mfMaxPos)
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mvBarPos.y = mfMaxPos;
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if (mvBarPos.y < mfMinPos)
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mvBarPos.y = mfMinPos;
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mBarRect.y = GetGlobalPosition().y + mvBarPos.y;
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lVal = (int)((mvBarPos.y - mfButtonSize) / mfValueStep + 0.5f);
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}
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// Horizontal
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else {
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mvBarPos.x = WorldToLocalPosition(aData.mvPos).x + mvRelMousePos.x;
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if (mvBarPos.x > mfMaxPos)
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mvBarPos.x = mfMaxPos;
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if (mvBarPos.x < mfMinPos)
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mvBarPos.x = mfMinPos;
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mBarRect.x = GetGlobalPosition().x + mvBarPos.x;
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lVal = (int)((mvBarPos.x - mfButtonSize) / mfValueStep + 0.5f);
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}
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if (lVal > mlMaxValue)
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lVal = mlMaxValue;
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if (lVal < 0)
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lVal = 0;
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if (lVal != mlValue) {
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mlValue = lVal;
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cGuiMessageData data = cGuiMessageData(mlValue);
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ProcessMessage(eGuiMessage_SliderMove, data);
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}
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}
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/*if(mbPressed && cMath::PointBoxCollision(aData.mvPos,mBarRect)==false)
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{
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mbPressed = false;
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}*/
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return true;
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}
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//-----------------------------------------------------------------------
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bool cWidgetSlider::OnMouseDown(cGuiMessageData &aData) {
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if (cMath::PointBoxCollision(aData.mvPos, mBarRect)) {
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mbPressed = true;
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cVector3f vRel = mvBarPos - WorldToLocalPosition(aData.mvPos);
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mvRelMousePos.x = vRel.x;
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mvRelMousePos.y = vRel.y;
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}
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return true;
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}
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//-----------------------------------------------------------------------
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bool cWidgetSlider::OnMouseUp(cGuiMessageData &aData) {
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if (mbPressed) {
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mbPressed = false;
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UpdateBarProperties();
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}
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return true;
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}
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//-----------------------------------------------------------------------
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bool cWidgetSlider::OnMouseEnter(cGuiMessageData &aData) {
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return false;
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}
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//-----------------------------------------------------------------------
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bool cWidgetSlider::OnMouseLeave(cGuiMessageData &aData) {
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return false;
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}
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bool cWidgetSlider::OnLostFocus(cGuiMessageData &aData) {
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if (mbPressed) {
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mbPressed = false;
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UpdateBarProperties();
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}
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return false;
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}
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//-----------------------------------------------------------------------
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} // namespace hpl
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Reference in New Issue
Block a user